One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,8,7)(3,12,14,9)(4,10,5,15)(6,16,13,11)(17,18,23,20)(19,24,21,25)(22,26,30,28)(27,31,29,32)(33,34,38,37)(35,41,42,39)(36,40,44,45)(43,47,48,46)(1,3)(2,9)(4,6)(5,13)(7,12)(8,14)(10,11)(15,16)(17,19,23,21)(18,24,20,25)(22,27,30,29)(26,31,28,32)(35,42)(36,44)(39,41)(40,45)(1,4,8,5)(2,10,7,15)(3,6,14,13)(9,11,12,16)(17,19,23,21)(18,25,20,24)(22,27,30,29)(26,32,28,31)(33,35)(34,39)(36,43)(37,41)(38,42)(40,46)(44,48)(45,47)(1,5,8,4)(2,10,7,15)(3,13,14,6)(9,11,12,16)(17,20,23,18)(19,24,21,25)(22,28,30,26)(27,31,29,32)(33,36,38,44)(34,40,37,45)(35,43,42,48)(39,46,41,47)(1,6,8,13)(2,11,7,16)(3,4,14,5)(9,10,12,15)(17,21,23,19)(18,24,20,25)(22,29,30,27)(26,31,28,32)(1,7,8,2)(3,12,14,9)(4,15,5,10)(6,16,13,11)(17,22,23,30)(18,26,20,28)(19,27,21,29)(24,31,25,32)(33,37,38,34)(35,41,42,39)(36,40,44,45)(43,46,48,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.